I’d like to use my phone as a remote control, but the devices of my local network are unreachable, my phone think they don’t exist and i don’t get why. I listed the concerned apps on the VPN exceptions list, even desinstalled the VPN app but it didn’t changed anything.
Some Routers (like Fritz Box), block access from wifi-devices to other devices on the same LAN by default. Usually this can be disabled in the routers settings.
Maybe there’s a Windows or Linux machine or your local network where you could use wireshark or tcpdump to analyze further how far the traffic between FP3 and PC travels…?